Restaurant Online Ordering App Development

I need an Android and Mac app for a small restaurant that doesn't take reservations. The main purpose of the app is online ordering.

Key Features:
- Online ordering functionality
- Detailed menu item descriptions (yes for all items)
- Payment options to be discussed (credit/debit cards, digital wallets, cash on delivery)

Ideal Skills & Experience:
- Experience in mobile app development for Android
- Experience in Mac app development
- Strong UI/UX design skills to create an intuitive and attractive interface
- Experience integrating secure payment gateways
- Ability to provide detailed item descriptions

Please submit a portfolio with relevant experience.